CN108318377A - The field testing procedure and its device used of a kind of quick obtaining coarse-grained soil density - Google Patents
The field testing procedure and its device used of a kind of quick obtaining coarse-grained soil density Download PDFInfo
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- CN108318377A CN108318377A CN201810162092.1A CN201810162092A CN108318377A CN 108318377 A CN108318377 A CN 108318377A CN 201810162092 A CN201810162092 A CN 201810162092A CN 108318377 A CN108318377 A CN 108318377A
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- storehouse
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- grained soil
- quick obtaining
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- 239000002689 soil Substances 0.000 title claims abstract description 43
- 238000012956 testing procedure Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 81
- 238000002474 experimental method Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 60
- 239000010959 steel Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009841 combustion method Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000000643 oven drying Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229940059082 douche Drugs 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
- G01N2009/026—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids the volume being determined by amount of fluid displaced
Abstract
The invention discloses the devices used in a kind of field testing procedure of quick obtaining coarse-grained soil density, it include the inflation storehouse of U-shaped structure, it inflates and is equipped with flexibility test film below the top plate in storehouse, the head end of flexibility test film is fixed on madial wall, it is equipped with pump bowl, air inlet warehouse and barometer on inflation Hold Ceiling, it is equipped with flowmeter at into gas storehouse, inflator is equipped with into gas storehouse top.It is tested using the device of the invention, experiment is relatively easy, and test accuracy is higher, and is adapted to different environment of testing pits.
Description
Technical field
The present invention relates to a kind of ground in-situ test device, especially a kind of field test of quick obtaining coarse-grained soil density
Method and its device used.
Background technology
At present in terms of ground Density Detection, there are core cutter method, nuclear gauge method, digs pit and pour water, fill micromicrofarad, Rayleigh face
Wave method.Fines soil can not be used for the coarse-grained soil of the particle containing oversize, when Density Detection, and just applicable core cutter method sample；It is auspicious
Sharp Surface Wave Method discreteness is larger, can not quantization resolution；Nuclear gauge method need to punch placement detection pipes, be difficult in coarse-grained soil
Squeeze into putting hole；Integrated comparative, which gets off only to dig pit, pours water, fills micromicrofarad suitable for coarse-grained soil Density Detection, and the parameter obtained is also simple
It is single to be illustrated.
But dig pit and pour water, fill micromicrofarad when being applied in coarse-grained soil workload it is very heavy, hydraulic and hydroelectric engineering coarse-grained soil
Testing regulations（DLT5356-2006）12.1.4 in item, test pits diameter and sample when calibration is using coarse grained soil filler Density Detection
Middle the largest particles diameter ratio is no less than 5, and depth and diameter ratio of testing pits are preferably 1.2-1.4, and diameter of testing pits is more than 20cm.It is public
Coarse grained soil filler particle in road engineering and hydraulic and hydroelectric engineering is larger, and the largest particles diameter is usually 10-15cm or so, according to rule
Journey regulation digs diameter of testing pits and cannot be less than 50-75cm, depth 60cm-105cm, volume of testing pits 0.94m3-1.86m3.Cause to try
It is more to cheat the filler needed, needs a large amount of filler during field test, removes more than cumbersome, on the contrary test period compares
It is long.
And coarse-grained soil using pour water, fills micromicrofarad carry out Density Detection on the one hand pour water, fills sand measure it is larger, in test site
On carry back and forth cumbersome, execute-in-place step is relative complex.Water, sand will be poured into and be tested pits in batches, and error, which is accumulated always, to be tested
As a result in.
On the other hand, it pours water and fills micromicrofarad and require upper flat of testing pits, require to carry out careful amendment work before excavation
Make, for this granulometric composition of coarse-grained soil and distribution extreme heterogeneous body it is difficult to ensure that the flatness on surface of testing pits.
Invention content
The object of the present invention is to provide a kind of field testing procedure of quick obtaining coarse-grained soil density and its dresses used
It sets.It is tested using the device of the invention, experiment is relatively easy, and test accuracy is higher, and is adapted to different test pits
Environment.
Technical scheme of the present invention：A kind of field testing procedure of quick obtaining coarse-grained soil density, includes following steps：
A, testing inspection regulation Selection experiment point, clearance test point surface surface dust are pressed；
B, the inflator for inflating storehouse is pressed onto minimum state, inflating the gas in storehouse with pump bowl, to empty to flexibility test film tight
Until patch inflation silo roof lid, and the air pressure recorded in inflation storehouse is denoted as；
C, inflation storehouse is placed at testing site, and inflation orlop portion is made to be contacted with testing site ground；
D, it is inflated using inflator, until inflation storehouse pressure stops inflating when being more than external pressure, and is recorded in inflation storehouse
Air pressure at this time is denoted as P1, and the meter readings on inflation storehouse are denoted as at this time；
E, it makes marks after circle in inflation storehouse periphery of contacting to earth, inflation storehouse is taken away；
F, the action of step B is repeated, until the air pressure in inflation storehouse is down toUntil；
G, with pour water, fill the identical excavation method of micromicrofarad, excavate out and test pits, planar range of testing pits is less than step E label circle models
It encloses, the quality for excavating out coarse fodder soil is denoted as, and part representative filler is taken to measure and test pits using oven drying method or alcohol combustion method
The water content of filler；
H, label circle is put back into inflation storehouse, is inflated into inflation storehouse using inflator, until air pressure reaches in inflation storehouseWhen, note
The flow reading for recording flowmeter at this time is denoted as；
J, the wet density and dry density of coarse-grained soil are obtained by following formula：
Wet density：；
Dry density：。
The field testing procedure of quick obtaining coarse-grained soil density above-mentioned, in the step C, when testing site concave-convex surface not
Usually, it is arranged circumferentially 1 group of small steel pole of limit on inflation storehouse, inflation storehouse is placed at testing site with rear, it is ensured that every limit
After small steel pole is contacted with ground, all small steel poles of limit are locked by steel pole tightening ring, and keep its state not
Become until entire experiment process terminates.
A kind of device used in the field testing procedure of quick obtaining coarse-grained soil density, includes the inflation storehouse of U-shaped structure,
It inflates and is equipped with flexibility test film below the top plate in storehouse, the head end of flexibility test film is fixed on madial wall, on inflation Hold Ceiling
Equipped with pump bowl, air inlet warehouse and barometer, into gas storehouse at be equipped with flowmeter, into being equipped with inflator above gas storehouse.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, inflation storehouse lateral wall are circumferential
Equipped with 2 layers or more of annular steel pole locating ring, circumferential direction is densely covered with aperture on annular steel pole locating ring, is equipped in aperture and limits small steel
Bar limits and is equipped with steel pole tightening ring between the annular steel pole locating ring on the outside of small steel pole.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, the steel pole tightening ring are equipped with
Tightening ring flexible handle, tightening ring flexible handle are located at the steel pole tightening ring handle active window of annular steel pole locating ring.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, inflation storehouse madial wall are circumferential
Equipped with film groove is set, flexibility test film head end is caught in set film groove after, press mold ring item is put into setting film groove.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, filling above the press mold ring item
Gas storehouse madial wall is equipped with fastening briquetting, and fastening briquetting covers press mold ring item.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, the fastening briquetting pass through screw
It is fixed on the madial wall in inflation storehouse.
Quantity is arranged in device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, the press mold ring item
It it is 4, every press mold ring radian is 89 degree.
Device used in the field testing procedure of quick obtaining coarse-grained soil density above-mentioned, the inflation storehouse and pump bowl and
Into between gas storehouse to be threadedly coupled, between gas storehouse and inflator to be threadedly coupled.
Beneficial effects of the present invention：Compared with prior art, the present invention has the advantages that following aspects：
1, the present invention uses inflation to replace pouring water, fill husky, solves the problems, such as that a large amount of water, husky carrying are difficult.Inflation is continuous simultaneously
It carries out, solution pours water, fills sand accumulated error caused by test result.
2, the present invention inflation when using flowmeter automatic gauge inject gas volume, save pour water, the water of douche,
Sand weighs work, saves test period.
3, surface irregularity is tested pits to testing knot amount using the method elimination of volume measurement twice before and after the small steel pole in lateral spacing position, excavation
Influence, save test period, improve the efficiency of field test.
4, isolation film, title, graduated cylinder, the funnel of micromicrofarad of pouring water, fill originally are constructively merged into a single unit system, if
It is more preferable to set integration, it is lighter, and each section is all sectional, assembly and disassembly are all very convenient, especially suitable for open country
Outer operation.
Description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Attached drawing 2 is the overlooking structure diagram of attached drawing 1；
Attached drawing 3 is the close-up schematic view of attached drawing 1；
Attached drawing 4 is the structural schematic diagram for inflating storehouse；
Attached drawing 5 is the overlooking structure diagram of attached drawing 4；
Attached drawing 6 is the structural schematic diagram of steel pole tightening ring；
Attached drawing 7 is the structural schematic diagram of press mold ring item；
Reference numeral：1- inflates storehouse, and 101- sets film groove, 102- steel pole locating rings, and 103- is into gas storehouse preformed hole, 104- air gauges
Preformed hole, 105- pump bowl preformed holes, 106- steel pole tightening ring handle active windows, the small steel pole of 2- limits, 3- steel pole tightening rings,
301- tightening ring flexible handles, 4- inflators, 5- pump bowls, 6- is into gas storehouse, 7- flowmeters, 8- barometers, 9- flexibility test films,
10- press mold ring items, 11- fasten briquetting.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
The embodiment of the present invention：A kind of field testing procedure of quick obtaining coarse-grained soil density, includes following steps：
A, representative testing site, and the surface dust on clearance test point surface are selected by testing inspection regulation；
B, inflation storehouse 1 is emptied before excavation：The inflator 4 for inflating storehouse 1 is pressed onto minimum state, will be inflated in storehouse 1 with pump bowl 5
Gas empty to flexibility test film 9 be close to inflate 1 head cover of storehouse until, and pass through inflate storehouse 1 on barometer 8 record inflation storehouse
Air pressure in 1 is denoted as；
Then it carries out excavating the detecting step before testing pits：
C, inflation storehouse 1 is placed at testing site, and 1 bottom of inflation storehouse is made to be contacted with testing site ground；
D, it is inflated using inflator 4, stops inflating when 1 pressure of storehouse is more than external pressure until inflating, usually 1.1atm, about
For 110kPa, and the air pressure recorded in inflation storehouse 1 at this time is denoted as P1, and the reading of flowmeter 7 on inflation storehouse 1 is denoted as at this time.Also this abundant termination pressure depending on concrete condition can be tried, stillShould ensure that cannot make to lift on experimental rig.
E, it makes marks after circle in inflation storehouse 1 periphery of contacting to earth, inflation storehouse 1 is taken away；
Inflation 1 internal gas of storehouse is emptied, inflator 4 is pressed onto minimum state by the action for F, repeating step B, will with pump bowl 5
The gas emptying in storehouse 1 is inflated, until barometer 8 detects that air pressure isUntil；
Then excavation step of testing pits is carried out：
G, with pour water, fill the identical excavation method of micromicrofarad, excavate out and test pits, planar range of testing pits should be slightly less than step E labels
The range of circle, size of testing pits are executed in strict accordance with specification, and the quality for excavating out coarse fodder soil is denoted as, and take part representative
Filler measures the water content for filler of testing pits using oven drying method or alcohol combustion method；
Detecting step after finally being excavated：
H, label circle is put back into inflation storehouse 1, and 1 bottom surface of inflation storehouse is made to be contacted with ground, beaten into inflation storehouse 1 using inflator 4
Gas, until air pressure reaches in inflation storehouse 1When, the flow reading for recording flowmeter 7 at this time is denoted as, work as air pressure during inflating
It is closeWhen, slow down and inflate speed, air pressure is improved to standardWhen value, the reading of recording flowmeter；
J, and then by following formula the wet density and dry density of coarse-grained soil be can be obtained：
Wet density：；
Dry density：。
In step C, when testing site surface irregularity, 720 small steel poles 2 of limit are arranged circumferentially on inflation storehouse 1, and
Guarantee limits small steel pole 2 can be free to slide, and inflation storehouse 1 is placed at testing site with rear, it is ensured that the small steel pole 2 of every limit is equal
After being contacted with ground, then by steel pole tightening ring 3 the small steel poles of all limits 2 are locked, and its state is kept not straighten
Terminate to entire experiment process.It may insure that the bottom in inflation storehouse 1 can no matter whether ground is smooth by limiting small steel pole 2
It is enough to be kept in contact with ground.This reduces the requirements to testing pits during experiment.
A kind of device used in the field testing procedure of quick obtaining coarse-grained soil density includes 1 as shown in attached drawing 1-7
The inflation storehouse 1 of a U-shaped structure inflates and is equipped with flexibility test film 9 below the top plate in storehouse 1, in the head end of flexibility test film 9 is fixed on
On side wall, 1 closed cavity is formed between such flexibility test film 9 and the top plate and side wall of inflating storehouse 1.The elasticity
Test film 9 is made of special rubber, and as slider, 9 elasticity of flexibility test film preferably, has certain toughness, can prevent
Block stone in being cheated by filler punctures.Inflation storehouse 1 top plate on be equipped with into gas storehouse preformed hole 103, air gauge preformed hole 104 and
Pump bowl preformed hole 105, wherein into gas storehouse preformed hole 103 for being installed into gas storehouse 6, air gauge preformed hole 104 is for installing gas
Pressure meter 8, pump bowl preformed hole 105 is for installing pump bowl 5.It is equipped with flowmeter 7 at into gas storehouse 6, is equipped with and inflates into 6 top of gas storehouse
Cylinder 4.
During use, perfusion material is used as using water, the sand in gas substitution traditional water irrigation, filling micromicrofarad, is avoided back and forth
It carries.It can be injected a gas into gas storehouse 6 by inflator 4, then enter back into shape between flexibility test film 9 and inflation storehouse 1
At gas storage space in, when inflating the lower section of storehouse 1 to test pits, under gas effect, flexibility test film 9 is inflated due to gas storage space
Expansion is gradually contacted and is bonded with the surface tested pits outward.And the injection rate of gas can accurate measurement by flowmeter 7.It is filling
Barometer 8 is arranged in the top of gas storehouse 1, and 1 pressure of storehouse of record inflation in due course is surveyed when inflation 1 pressure of storehouse reaches outside atmosphere pressure+elasticity
Examination film 9 stops after demarcating internal pressure, if air pressure is exceeded, can be evacuated by pump bowl 5.
Lateral wall circumferential direction is equipped with 2 layers or more of annular steel pole locating ring 102, and circumferential direction gathers on annular steel pole locating ring 102
There are 720 apertures, the necessary consistency from top to bottom of aperture of upper and lower two circumferential steel pole locating rings 102, aperture ratio to limit the straight of small steel pole 2
Diameter is bigger.1 small steel pole 2 of limit is equipped in each aperture, limit 2 outside of small steel pole annular steel pole locating ring 102 it
Between be equipped with steel pole tightening ring 3.Can ensure to limit small steel pole 2 whenever all equipped with 2 layers or more of annular steel pole locating ring 102
It is at vertical state, even expansion contacts flexibility test film 9 with small steel pole 2 is limited outward, will not to limit small
Steel pole 2 is deflected outward.When test pits surface irregularity when, if being not provided with the small steel pole 2 of limit, inflate the bottom surface in storehouse 1
It can not be just bonded completely between ground, just be difficult to observe whether inflation storehouse 1 has upper lift during experiment.And it is small to be provided with limit
Steel pole 2 since the every small steel pole of limit 2 can move freely, therefore can ensure that it can be contacted with ground.Limit small steel
After bar 2 is contacted with the ground tested pits, 2 state of small steel pole will be limited by steel pole tightening ring 3 and be locked.It is used during experiment
The volume measured twice before and after excavating subtracts each other the net volume that can be obtained and test pits.
The steel pole tightening ring 3 is equipped with tightening ring flexible handle 301, and tightening ring flexible handle 301 is located at annular steel pole
At the steel pole tightening ring handle active window 106 of locating ring 102.It may make that steel pole is loose by pulling tightening ring flexible handle 301
Lock ring 3 is locked or is unclamped.
The 1 madial wall circumferential direction of inflation storehouse is equipped with and sets film groove 101, and 9 head end of flexibility test film, which is caught in, sets film groove 101
Afterwards, press mold ring item 10 is pressed into setting film groove 101.Flexibility test film 9 is fixed, elasticity can be prevented in gas replenishment process
Test film 9 is drawn out by internal pressure effect.
1 madial wall of inflation storehouse of 10 top of the press mold ring item is equipped with fastening briquetting 11, and fastening briquetting 11 covers press mold
Ring item 10.Flexibility test film 9 can be further fixed.It is 12 pieces to fasten briquetting 11 quantity is arranged, and every 30 radian is provided with 1
Block.
Every piece of fastening briquetting 11 is fixed on by upper and lower two screws on the madial wall in inflation storehouse 1.
It is 4 that quantity, which is arranged, in the press mold ring item 10, and every 10 radian of press mold ring item is 89 degree.Adjacent 2 press molds ring item
1 degree is differed between 10, and insertion tool is facilitated to pull out press mold ring item 10.
The inflation storehouse 1 with pump bowl 5 and between gas storehouse 6 to be threadedly coupled, into being spiral shell between gas storehouse 6 and inflator 4
Line connects.It is attached again after being sealed with adhesive waterproof tape when being mutually threadedly coupled, avoids gas leakage.
Claims (10)
1. a kind of field testing procedure of quick obtaining coarse-grained soil density, it is characterised in that：Include following steps：
A, testing inspection regulation Selection experiment point, clearance test point surface surface dust are pressed；
B, storehouse will be inflated（1）Inflator（4）It is pressed onto minimum state, uses pump bowl（5）Storehouse will be inflated（1）In gas empty to
Flexibility test film（9）It is close to inflate storehouse（1）Until head cover, and record inflation storehouse（1）Interior air pressure is denoted as；
C, storehouse will be inflated（1）It is placed at testing site, and makes inflation storehouse（1）Bottom is contacted with testing site ground；
D, using inflator（4）It inflates, until inflation storehouse（1）Stop inflating when pressure is more than external pressure, and records and fill
Gas storehouse（1）Inside air pressure at this time is denoted as P1, and storehouse is inflated at this time（1）On flowmeter（7）Reading is denoted as；
E, in inflation storehouse（1）Periphery of contacting to earth makes marks after circle, will inflate storehouse（1）It takes away；
F, the action of step B is repeated, until inflation storehouse（1）Interior air pressure is down toUntil；
G, with pour water, fill the identical excavation method of micromicrofarad, excavate out and test pits, planar range of testing pits is less than step E label circle models
It encloses, the quality for excavating out coarse fodder soil is denoted as, and part representative filler is taken to measure and test pits using oven drying method or alcohol combustion method
The water content of filler；
H, storehouse will be inflated（1）Label circle is put back to, using inflator（4）To inflation storehouse（1）It inside inflates, until inflation storehouse（1）Interior gas
Pressure reachesWhen, record flowmeter at this time（7）Flow reading be denoted as；
J, the wet density and dry density of coarse-grained soil are obtained by following formula：
Wet density：；
Dry density：。
2. the field testing procedure of quick obtaining coarse-grained soil density according to claim 1, it is characterised in that：The step
In C, when testing site surface irregularity, in inflation storehouse（1）On be arranged circumferentially 1 group of small steel pole of limit（2）, storehouse will be inflated（1）
It is placed at testing site with rear, it is ensured that the every small steel pole of limit（2）After being contacted with ground, pass through steel pole tightening ring（3）By institute
There is the small steel pole of limit（2）It is locked, and keeps its state constant until entire experiment process terminates.
3. the device used in a kind of field testing procedure of quick obtaining coarse-grained soil density as described in claim 1-2, special
Sign is：It include the inflation storehouse of U-shaped structure（1）, inflate storehouse（1）Top plate below be equipped with flexibility test film（9）, flexibility test
Film（9）Head end be fixed on madial wall, inflation storehouse（1）Top plate is equipped with pump bowl（5）, air inlet warehouse（6）And barometer
（8）, into gas storehouse（6）Place is equipped with flowmeter（7）, into gas storehouse（6）Top is equipped with inflator（4）.
4. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 3, feature exist
In：The inflation storehouse（1）Lateral wall circumferential direction is equipped with 2 layers or more of annular steel pole locating ring（102）, annular steel pole locating ring
（102）Upper circumferential direction is densely covered with aperture, is equipped in aperture and limits small steel pole（2）, limit small steel pole（2）The annular steel pole in outside positions
Ring（102）Between be equipped with steel pole tightening ring（3）.
5. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 4, feature exist
In：The steel pole tightening ring（3）It is equipped with tightening ring flexible handle（301）, tightening ring flexible handle（301）Positioned at annular steel pole
Locating ring（102）Steel pole tightening ring handle active window（106）Place.
6. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 3, feature exist
In：The inflation storehouse（1）Madial wall circumferential direction is equipped with and sets film groove（101）, flexibility test film（9）Head end, which is caught in, sets film groove
（101）Afterwards, film groove is being set（101）In be put into press mold ring item（10）.
7. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 6, feature exist
In：The press mold ring item（10）The inflation storehouse of top（1）Madial wall is equipped with fastening briquetting（11）, fasten briquetting（11）Cover pressure
Film ring item（10）.
8. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 7, feature exist
In：The fastening briquetting（11）It is fixed by screws in inflation storehouse（1）Madial wall on.
9. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 6, feature exist
In：The press mold ring item（10）It is 4 that quantity, which is arranged, every press mold ring item（10）Radian is 89 degree.
10. the device used in the field testing procedure of quick obtaining coarse-grained soil density according to claim 3, feature exist
In：The inflation storehouse（1）With pump bowl（5）With into gas storehouse（6）Between for be threadedly coupled, into gas storehouse（6）With inflator（4）Between
To be threadedly coupled.
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| CN201810162092.1A CN108318377A (en) | 2018-02-27 | 2018-02-27 | The field testing procedure and its device used of a kind of quick obtaining coarse-grained soil density |
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| CN201810162092.1A CN108318377A (en) | 2018-02-27 | 2018-02-27 | The field testing procedure and its device used of a kind of quick obtaining coarse-grained soil density |
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